Attaching means for multigraph signature plates



. 3,629,376 May 17, W27 H. T. BUQK ATTACHING MEANS FOR MULTIGRAPHSIGNATURE PLATES Filed Nov. 15. 19 6 INVENTOR 15501111711 1. Each. M,

\ ATTORNEY Patented May 17; @270 1 noon, on can-an. KNOITJLS; NEW Jarmciamemnens roe MULrreaarn srenra'rnnn snares.

Application area novembe is, 1926. Serial no. ieaaso.

This invention relates to attaching 'de vices and has particularreference to an'improved means for attaching the signature hearingelements to the platen roll 'of' a multigraphing machine. I

At the present time the signature plates are commonly attached to theplaten rolljofj a multigraphing machine by clips or strips which engageover the edge of the si nature I plate and which clips or strips arelield 1n place by the passage of screwstherethrough which screwsareanchored in threaded openings in the plat'en.,- In addition to thetime and labor. required in changing the plates 1 on the roll this meansof attachment is open to the objection that it oft times warps thesignature plate and. prevents a proper im-j prcssion OIIPIOClllC-lllOl'l of thesignaturc on' the paper. Furthermore, the plateswhich 2 at the present time include an arcuate more or less flexiblebacking element have a tendency to become warped and the clips or stripsnow employed do not function to overcome this objection; I j

As one of its principaljfobjects the invention aims to provide an"improved attaching meansof a character set forth which,

in addition to greatly facilitating the oper-.

ation of mounting and dismounting the'sig- 33 nature plate on the platenroll also functions to prevent warping of the plate, at the same time,operates as a means forrestoring the plate when applied to its propershape while holding the same in perfectcontact with theplaten roll\:

The invention furthermore comprehends an attaching means whicheliminates; the necessity of using a screw driver or other tool for thepurpose of 4 ing the signature plate;

As a still further object the invention comprehends an attaching means 7wlllclll allows for circumferential adjustment of the signature plate onthe platen roll so as to insure the proper relation of the signature tothe letter. i v j The invention further comprehends an attaching meansof the character set forth which isextremely simple in its construction,inexpensive to manufacture, andwhich is highly efficient in its purpose.

With theabove recited and other objects in view, reference is had to thefollowing specification and accompanying drawings .in which there isexhibited one exampleor em bodiment of the invention which isno applyingor remov -way intended as a limitation upon the scope of the appendedclaims as it is to be clearly understood that variationsandmodifications which properly fall within the scope of said claims may beresorted towhen found ex? pedient. I

In the drawings'.

Figure 1 is a plan view of a platen'roll illustrating the signatureplate mounted thereon by means of the improved attaching means;

Figure 2 is a. side view thereof with parts in section; v v

Figure 3 is adetail plan view of the platen roll withthe signature plateremoved;

Figure 4 is. a transverse sectional view taken approximately on the line4-4 of Figure 1;

Figure 5 is an enlargedsectional View through the attaching meansremovedr FigureG is a fragmentary view of the. e i

backing element of the signature plate.

Referring to the drawings byncharacters of reference: 10 designates theplaten roll which may be of the ordinary construction -e having radialapertures 11. element 12 of the signature. videdwith a. plurality ofnotches 13 in its opposite ends so that when mounted on'the The backingplate is proas; a

periphery of the platen roll the notches may? be brought intoprospective registry with the apertures 11. In order to attach thesignature plate apair of retaining elements are employed which areadapted to encircle the platen roll andsaid retaining cl mentspreferably consist of radially contractilev bands cachet which includesa substantially semi-circular nonelastio section'l lpand asimilarlyformed; elastic or resilient section a 15, the former be ng inthe nature of a strip preferably-in of sheet'metal and the latterth'enature of a coiled contractile spring The non-elastic section 14- is.or section 15 are connected; with the band provided with i a radialinwardly projecting detentor pin16 which-is preferably-providedintermediate 1 its length and which is of a sizetosnugly section ornon-elastic section 14by sIittijngi-V from the section I l -tongues 19and52Q, one;

of which, for instance the tongue19; is hentf' terminal 17 to permanentno around thespring I 1y attachthe spring termix althereto-while theother of which, for exampleirthe tongue 2 0, const itutes "a, hook fordeta'chablyholdQ v.

ing the spring terminal 18 in associated relation with the band section14. By construc- .ing the element in this manner it is obvious that thesame may be applied to or removed from the platen roll without thenecessity of removing the same from its bearings. W hen ferentially onthe platen roll may be readily accomplished and the operation ofadjusting, removing or applymg' the signature plate is accomplished byraising lhefband' sections 14 a suflicient distance to disengagesections 14 therewith will tend the detents or'pin 16 from the notchesand apertures, and moving the same axially or laterally outward.

From theforegoing it will thus be seen that an extremely simple,inexpensive and eilective attaching means has been devised which greatlyreduces the time and labor incident to the mounting or (lis'mountins: ota signature stamping upon the platen roll. It will befurther noted thatin the event of a warped condition existing in the signature plate. theembracing engagement of the hand; to draw and maintain the signature pate in perfect contact with the periphery of the platen roll.

lVhat I claim is: e

1. The combination with the apertured platen roll of amultigraphingmachine and a signature plate having notches in its opposite ends, ofmeans "for detachably connecting the plate with the roll comprising apair of substantial semi-circular flexible strips each provided with astud adapted to engage through the notched ends oi the plates and theapertures of the platen roll and an elastic means of connection het-weenthe free .ends of each strip engaging around the platen roll,

'2. The combination with the apertured platen roll oil a multigraphingmachine and a signature plate having notches in its 0 posito ends, ofmeans for detachably connecting' the plate with the, roll comprising apair of substantial semi-circular tlexihle strips each provided with astud adapted to engage through the notche the plates and the apertures oand elastic means of co the free ends of each strip engaging around theplaten roll, said elastic means of connection being permanently securedto one end of the strip and detachably engaged with the opposite end. 4v

3. In a multigraph machine signature printin attachment, means fordetachably associating the signature plate with the perforated platenroll comprising notched ends formed in the plate and radiallycontractile bands having detents engageable through the notched ends ofthe plate and the perforations of the roll.

4. In a multigraphing machine signature printing attachment, means "fordetachaloly associating the signature plate with the perforated platenroll comprising notched'cnds formed in the plate and radiallycontractile bands having detents engagealole through the notched ends ofthe plate and the perforations of the roll. said bands being radiallyexpansible 'topermit disengagement of the dotents and lateral shiftingof'thefhands.

5. In a multigraph machine signature printing attachment, means fordetachably associating the signature plate with the perforated platenroll ctmnprisin; notched ends formed in the plate and radiallycontractile hands having dctents engageable through the notched ends ofthe plate and the perforations of the'roll. said bands including flex-.ible non-elastic substantial semi-circular sections and contractileelastic SQClTlOIlS.

6. In a .multigraph machine signature printing attachment, means fordetachably associating the signature plate with "the pen forated platenroll comprising notched ends formed in the plate and radiallycontractile bands having detents engageable through the notched ends oithe plate and the perforations of the roll, said bands includingflexible non-elastic substantial semi-circular sections and contractileelastic sections, said elastic sections being permanently secured at oneend and detachably connected on the opposite end to the non-elasticsections whereby to permit of the association and 1 disassociation ofthe bands withthe platen roll without the necessity oft-removing the,platen roll from its bearings.

7. A device for detachably associating a type bearing element with aplaten roll, said device including radially contractile meanscireumierentially embracing the platen roll and'having a detentrespectively engageahle with the hearing element and platen roll.

HOWARD T. B'UGK.

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